Time domain channel prediction method and time domain channel prediction system for OFDM wireless communication system
US11381442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Nov 15, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2607
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided are a time domain channel prediction method and a time domain channel prediction system for an OFDM wireless communication system, which relate to the technical field of adaptive transmission in wireless communication. Frequency domain channel information is converted into time domain tap information by inverse Fourier transform. With respect to each time domain tap information, tap information prediction based on an extreme learning machine is realized, and finally predicted tap information is converted into frequency domain channel information by Fourier transform. To improve a generalization ability of a channel predictor, an output weight of the extreme learning machine is punished by a combination of l2 regularization and l1/2 regularization. The disclosure may provide satisfactory prediction performance and may output a sparse output weight, which reduces the requirement for memory storage. The disclosure ensures adaptive transmission and adaptive coding of wireless communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.